### Function

# GLib idle_add

#### Declaration [src]

    guint
    g_idle_add (
      GSourceFunc function,
      gpointer data
    )

#### Description [src]

Adds a function to be called whenever there are no higher priority events pending to the default main loop. The function is given the default idle priority, `G_PRIORITY_DEFAULT_IDLE`. If the function returns `FALSE` it is automatically removed from the list of event sources and will not be called again.

See mainloop memory management for details on how to handle the return value and memory management of `data`.

This internally creates a main loop source using `g_idle_source_new()` and attaches it to the global `GMainContext` using `g_source_attach()`, so the callback will be invoked in whichever thread is running that main context. You can do these steps manually if you need greater control or to use a custom main context.

This function is not directly available to language bindings.

The implementation of this function is provided by `g_idle_add_full()` in language bindings.

#### Parameters

`function`

  Type: `GSourceFunc`

  Function to call.

`data`

  Type: `gpointer`

  Data to pass to `function`.

  The argument can be `NULL`.
  The data is owned by the caller of the function.

#### Return value

Type: `guint`

The ID (greater than 0) of the event source.